Actually staying away from the airport is no big deal as taxi's are cheap. You can take a cab to the Amari Atrium which is in E. Bangkok for about 100 Baht or less than three bucks... I was there last week and you could get a really nice room for $40 USD which included a great buffet breakfast from 6AM to 10 AM.... Takes about 20 minutes to a half hour in the cab - if not rush hour time. The hotel will also provide you transporation with their "limo" for 642 BAht which is about 15 USDollars...(one way).

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reb